Shock-absorber.



E. V. HARTFORD. SHOCK MBSOR'BRRA APPLIUATION FILED DEC. l0, 1%)10 llyOElyQ, Patented Dec.28,191.

ma i s? other parts and 'for preventing; trietioual EDWARD V. HARTFORD,

0F una r., une? Jnnsnv.

snooxnnsonnnn.

Specification of Letters Potent.

utented Der. 231913.

Application filed December 10, i910. Serial No. 598,570.

To o?! ifi/wm, if muy concern:

Be it known that. I. llowann V. Haur- 'ronrn a citizen ol* the UnitedStates, resid* ine' at Deal, in the county of Monmouth and tqtatc of NewJersey, have invented certain new and useful Tmprovements inShoek-hsorlurs, ot which the following is a full, Clear. and exactspeeifieation.

This invention relates to and has `tor au object to provide an improvedshock ahsofber.

The invention has reference to improved means for preventingrindependent rotation of certain parts of the devieo relatively toWearing between some oi. the movahle parts.

The invention presents a strong and mechanical strluvture.

ln the drawings accompanying and forming a part oi this specification soniueh of a shook absorber embmlyinr,r one practicable 'form ot' myinvention is shown as will be necessary to illustrate the present.invention. Figure 1 is n central section through a portion of a shockahsmber equipped with one form of Ury-present improvement. Fig. 2 is anillustration of one of the .friction disk cups disassembled, und Fi 3 isan illustration of an end of one o the arms the other end of which Willin practice he secured to one of the movable parts of the vehicle. Thearm 5 is illustratori broken away, the portieri which is not shown Willho secured to a portion of the vehicle i a moniner well known in thisart. The p vot? end of this arm is shown interposed between the pivotends of he members of n *pair of: arms 6 and 7, W ich are also shownbroken army, the portionswhieh are not showin will inathe usual mannerhe secured together andgto another part of the vehicle which is movablerelatively to the part to which the arm 5 is secured and between whichvehicle parts .it is desired to interposta resistance upon such relativemovement. A pivot p'in 8 is illustrated -for aifin'ding the pivotalconnection between the interposed arm 5 and the members of `the pair ofarms 6, 7. This pivot pin is provided with a head 9 having pins 10,which pins engage suitable openings 11 in the arm (i. 'ihe openings 4 inthe arms 6, 7 through which the pivot pin passes will preferably he eo11..,tr1u,ted to closely engage the pivot pin7 since the pin is held fromrotation relatively to these arms.

`Snitahle wear resisting devices shown in, the forni of disk shapedwashers l2 will be interposetl lit-tween the side iones of the arm 5,where this lies heir/een the arms 6 und 7. laeh of these Wear resistingmembers 12 is ineased in a washer cup til, on its side. toward theadjacent. arm ti or (as the case nuev he. lt; is desirahlo to preventinden pendent rotation oi the Washer emi I3 relu tively to the adjaeent,arm (i or T and for this purpose the washer oups are provided withstreek up lugs 14, which find entrauoe in suitably prepared openings l5`in the ends of the arms. The openings 'tti in the washer oups torreeeiviug the pivot pin may elosellv conform to this pin` because, beingheld from rotation relatively to the arms of the pair oi arnis they willalso he held from independent rotation relative to the pivot pin tl.

The lugs 14 are located at a eonsiderahle distance from the renter oi?the eup and are comparatively near the perimeter thereof. This locationof the lugs placosthein at positions in which there will he the,ereatest leverage and consequently the least. Wear.

The arm 5 osrillnting on the pivot. 8 as the connected p rts of thovehicle more one relatively to the other has a Wearing eileet; upon theopening' or eve in the arm 5 which .surrounds the pivot: piu und alsoupon 'the pin itself. This wearing .shortens the life of the device andoccasions ui'isatisaetory Working after the device has heen in use ior eshort time. To ohviate this difiienlt'y the eye 3 in the interposed arm5 is shown of largcrradins than the radius of the pivot -sin. A hardenednn`ti-friction sleeve or ircohearing' member 17, which is of muchgreater length than the thickness of the-erm 5, is shown mounted looseupon the pivot piu 8, and the oye of the interposed arm 5 mounted looseupon this sleeve 17, whereby a workin;Y fit; will be present betweenthe` pin and the sleeve and between the sleeve and the eye in the arm.liy this construe` tion, upon the relative movement of ves hielomembers, either the sleeve muy move on the piu or may [nove in the eye,accord* CII ino' towlneh at amr particular momentmay 'y present tholeast lrietioual resistance.

The autr-friction sleeve VI7 muy be Suili eiently long to pass throughopenings inthe A fs 1Q, and', exencl approxiinnei f ees (if lie Wnsliercensini openings; in the (lislis y mail@ Of eonssiale ably greaterrnin'lzlie @inside infinis uit' the sleeve 1T i @Trying packing i8, maybe nin 'ne chamber Unis: pinvided Y" e anni the Sleeve.

'be held tog/ailier yielilalil'i emi .2 miner as b j means of anni nut20.

,my iiwenlien E daim: "o lei :for vehicles having ine saine com g Lieionnmlei'ial 'femining cups for inne fisso- "wwn tile l 20 eil it@ wir;inie-` 'eups and l aims i, t ving inning' plisl n, pinning; of i F50 'leliiel 1 foy :-itling einge ass@ Vemen eeve mounied mi reni-ined @mimeans r l l :noemen nffweineiit of Said frieiiin disks and ieiiiiningCupsP :in unti-fi'ietinn bearing fe? nneoif said friction. disks, saidbearing @Ing positioned and retained within :nul between the cups, andlubiiean-czu'rying packing suiounding tix/e antiflieion bearing.

4i. in a shock-absorber for Vehicles imi/fing spring-supportingnezins,'lie combination with.' :i pivot pin, of e. pun* 0f arms helclfrom movement, -`elaively thereto, a ilijn :mn interposed between themonili-ers n' Said pail of :wins and having an eye sm'- rminding saidpivot pin, mi an'i-friicion sieeve longen 'than the thickness 0i? such:win meunied'upon sniei'. pivot pin and occupying lie in the sind armand having L woi'king )fit Wi'li the said pin and with said eye,ffcietion isis lne'zween saidbinterposed arm enel ille arms of lne -paiiand having @pew ings Surrounding said sleeve of gieazei me clins than he.outside radius thereof, such openinms forming a chambel, and lubricantCarrying' peeking disposed in Such Chamber beiween the said frictiondisks and sieeve, and ineens for holding lie arms and fi'ietien disks inclose association so hat any nievenien'i', iiereof Wil be accompanied by:L ein respnniing Elm@ i Wi @ssn/hereof fl' have liel'eunt Se i my namein ille presence of ive subscribing Winessses.

